Breakdown Information
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Second One:
RV particulars: 2003 NRV Tradewinds LTC
Driveline (Engine, Transmission): Cummins 350 turbo ISC, Allison 6000
Miles: 3750
Year: 2004
Break Down Description: Loss of power (slow engine shut down) while driving up grade on freeway.
Symptoms: Warning buzzer sounded on dash, followed by “check engine indicator light”, then “red shut down engine indicator light”, about 15 seconds later “low oil pressure indicator light”. Also during this two-minute “bells & whistles drill” the oil pressure, as indicated on gage, slowly receded to zero.
Effect: Engine was put into automatic shut down mode do to loss in oil pressure.
Cause: Defective oil pressure switch
Outcome: Thanks to cell phone, Cummins was very responsive and had a roadside service tech to me in two hours. Upon arrival the Tech confirmed our phone diagnosis and installed new oil pressure switch and then reprogrammed the ECM to see the new style pressure switch. And yes, the new switch is different and supposedly much less sophisticated and trouble prone than the original. Of coarse, No Charge……all under warrantee!
In spite of the inconvenience I was very happy with the Cummins response to my breakdown, being back underway in less that three hours of calling their 800 emergency number. Also, for what it may be worth; on the QT, I was told this is a common problem with the older ISC engines. I would estimate that my engine was manufactured in early 2002. If you have one, you may want to check it out or upgrade at next service. The Tech also upgraded my ECM software from the original version 11 to version 16 (the latest) but I haven’t noticed any difference in operation or performance.
Jack
RV particulars: 2003 NRV Tradewinds LTC
Driveline (Engine, Transmission): Cummins 350 turbo ISC, Allison 6000
Miles: 3750
Year: 2004
Break Down Description: Loss of power (slow engine shut down) while driving up grade on freeway.
Symptoms: Warning buzzer sounded on dash, followed by “check engine indicator light”, then “red shut down engine indicator light”, about 15 seconds later “low oil pressure indicator light”. Also during this two-minute “bells & whistles drill” the oil pressure, as indicated on gage, slowly receded to zero.
Effect: Engine was put into automatic shut down mode do to loss in oil pressure.
Cause: Defective oil pressure switch
Outcome: Thanks to cell phone, Cummins was very responsive and had a roadside service tech to me in two hours. Upon arrival the Tech confirmed our phone diagnosis and installed new oil pressure switch and then reprogrammed the ECM to see the new style pressure switch. And yes, the new switch is different and supposedly much less sophisticated and trouble prone than the original. Of coarse, No Charge……all under warrantee!
In spite of the inconvenience I was very happy with the Cummins response to my breakdown, being back underway in less that three hours of calling their 800 emergency number. Also, for what it may be worth; on the QT, I was told this is a common problem with the older ISC engines. I would estimate that my engine was manufactured in early 2002. If you have one, you may want to check it out or upgrade at next service. The Tech also upgraded my ECM software from the original version 11 to version 16 (the latest) but I haven’t noticed any difference in operation or performance.
Jack
